Springs don't always last forever, so here is an in depth breakdown video on how to change a spring out for a Boker Strike auto.
https://bladeops.com/boker-plus-01bo403-od-green-strike-tanto-auto-knife-aus-8-black-combo-blade/
Springs: https://bladeops.com/replacement-springs-boker-mini-kalashnikov-auto-boker-strike-auto-2-pack/
Kalashnikov Spring Replacement: https://www.youtube.com/watch?v=71Z0Wpn1TVE&t=20s
